#pragma once
#include <iostream>
#include <string>
#include <sys/socket.h>
#include <sys/types.h>
class Util
{
public:
    int static ReadLine(int sock, std::string &out)
    {
        char ch = 'X';
        while (ch != '\n')
        {
            ssize_t s = recv(sock, &ch, 1, 0);
            if (s > 0)
            {
                if (ch == '\r')
                {
                    recv(sock, &ch, 1, MSG_PEEK);
                    if (ch == '\n')
                    {
                        recv(sock, &ch, 1, 0);
                    }
                    else
                    {
                        ch = '\n';
                    }
                }
                  out.push_back(ch);
            }
            else if (s == 0)
            {
                return 0;
            }
            else
            {
                return -1;
            }
        }
        return out.size();
    }

    static bool CutString(const std::string& target,std::string& left_out,std::string& right_out,std::string sep)
    {
        size_t pos=target.find(sep);
        if(pos!=std::string::npos)
        {
            left_out=target.substr(0,pos);
            right_out=target.substr(pos+sep.size());
            return true;
        }
        return false;
    } 

};